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Creator | Title | Description | Subject | Date |
| 526 |
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Ehleringer, James R. | Seedling size and survival for Chrysothamnus nauseosus | Seedling size and survival in relation to summer drought were examined for Chrysothamnus nauseosus growing under field and greenhouse conditions. In the field, summer survival rates were less than 2% annually for the three years monitored. The effect of initial seedling height on subsequent survival... | Chrysothamnus nauseosus; Seedling size; Seedling survival | 1993 |
| 527 |
 |
Davidson, Diane W.; Rickart, Eric Allan; Keiter, Robert B. | Selecting wilderness areas to conserve Utah's biological diversity | Congress is currently evaluating the wilderness status of Bureau of Land Management (BLM) public lands in Utah. Wilderness areas play many important roles, and one critical role is the conservation of biological diversity. | Bureau of Land Management; Conservation; Endemic species; Exotic species; Cryptobiotic soils; Plants; Bees; Vertebrates | 1996 |
| 528 |
 |
Adler, Frederick R.; Liou, Theodore G.; Cahill, Barbara C. | Selection of patients with cystic fibrosis for lung transplantation | Lung transplantation is the most aggressive therapy available for end-stage lung disease from cystic fibrosis (CF). A new predictive survival model of CF uses demographic, FEV1, nutritional, microbiologic, and acute exacerbation data to produce precise estimates of 5-year survival. | Predicted survival; Living donor; Mechanical ventilation | 2002 |
| 529 |
 |
Capecchi, Mario R. | Selective degradation of abnormal proteins in mammalian tissue culture cells. | The degradation rates of several missense mutants of hypoxanthine-guanine phosphoribosyltransferase (EC 2.4.2.8) in mouse L cells are compared to those of the wild-type enzyme. Although the rates of total protein breakdown in the mutant cell lines are identical to that of the parental L cell line, ... | Gene Expression Regulation; Mice, Transgenic; Microscopy, Fluorescence | 1974-12-01 |
| 530 |
 |
Ehleringer, James R.; Belnap, Jayne | Sensitivity of the Colorado plateau to change: climate, ecosystems, and society | The Colorado Plateau is located in the interior, dry end of two moisture trajectories coming from opposite directions, which have made this region a target for unusual climate fluctuations. A multidecadal drought event some 850 years ago may have eliminated maize cultivation by the first human settl... | Colorado Plateau; Biological crust; Climate change; Megadrought; Ranching; Dry crop productivity; Extractive industries; Pueblo Indians; Fremont culture | 2008 |
| 531 |
 |
Capecchi, Mario R. | Sepp1UF forms are N-terminal selenoprotein P truncations that have peroxidase activity when coupled with thioredoxin reductase-1 | Mouse selenoprotein P (Sepp1) consists of an N-terminal domain (residues 1-239) that contains 1 selenocysteine (U) as residue 40 in a proposed redox-active motif (-UYLC-) and a Cterminal domain (residues 240-361) that contains 9 selenocysteines. Sepp1 transports selenium from the liver to other tiss... | | 2014-01-01 |
| 532 |
 |
Seger, Jon | Sexual dimorphism in the Hymenoptera | Spectacular sex differences of many kinds occur abundantly among the wasps, bees and ants that make up the insect order Hymenoptera. In some cases these differences are so extreme that males and females of the same species have been classified in different genera for decades, until a chance observa... | Reproductive; Insect; Morphology | 1994 |
| 533 |
 |
Sperry, John S. | Shoot dieback during prolonged drought in Ceanothus (Rhamnaceae) chaparral of California: a possible case of hydraulic failure | Progressive diebacks of outer canopy branchlets of Ceanothus crassifolius were repeatedly observed after rainless periods up to 9 mo in duration in the Santa Monica Mountains of southern California. Mean xylem pressures of branchlets near the end of drought were as low as -11.2 MPa (N = 22) with a m... | Water relations; xylem cavitation; water-stress-induced loss | 2002 |
| 534 |
 |
Gesteland, Raymond F. | Simian virus 40-specific polypeptides in Ad2+ND4- infected cells | A comparison of the proteins synthesized in human cells at late times after infection with adenovirus (Ad2) and with the adeno-simian virus 40 (SV40) hybrid viruses revealed polypeptides of 30,000 and 92,000 molecular weight specific for the hybrid viruses Ad2+ND1 and Ad2+ND4, respectively. Cell-fre... | Molecular Weight; Peptide Biosynthesis; RNA, Messenger; Viral Proteins | 1976 |
| 535 |
 |
Ehleringer, James R. | Simplified GIS approach to modeling global leaf water isoscapes | The stable hydrogen (d2H) and oxygen (d18O) isotope ratios of organic and inorganic materials record biological and physical processes through the effects of substrate isotopic composition and fractionations that occur as reactions proceed. At large scales, these processes can exhibit spatial predic... | Oxygen isotope ratio; Hydrogen isotope ratio; Leaf water isoscapes; GIS | 2008 |
| 536 |
 |
Olivera, Baldomero M. | Single amino acid substitutions in ĸ-conotoxin PVIIA disrupt interaction with the Shaker K+ channel | ĸ-Conotoxin PVIIA (ĸ-PVIIA), a 27-amino acid peptide with three disulfide cross-links, isolated from the venom of Conus purpurascens, is the first conopeptide shown to inhibit the Shaker K1 channel (Terlau, H., Shon, K., Grilley, M., Stocker, M., Stühmer, W., and Olivera, B. M. (1996) Nature ... | Conotoxins; k-conotoxin PVIIA; Shaker K+ channels; Conus purpurascens | 2000 |
| 537 |
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Capecchi, Mario R.; Thomas, Kirk R. | Site-directed mutagenesis by gene targeting in mouse embryo-derived stem cells | We mutated, by gene targeting, the endogenous hypoxanthine phosphorlbosyl transferase (HPFlT) gene in mouse embryo-derived stem (ES) cells. A specialized construct of the neomycin resistance (NO') gene was introduced into an exon of a cloned fragment of the Hprf gene and used to transfect ES cell... | Site-directed mutagenesis; Hypoxanthine phosphorlbosyl transferase gene; HPFlT gene; Neomycin resistance gene; Homologous recombination; Mouse stem cells; Mouse embryo-derived stem cells | 1987 |
| 538 |
 |
Sperry, John S. | Size and function in conifer tracheids and angiosperm vessels | The wide size range of conifer tracheids and angiosperm vessels has important consequences for function. In both conduit types, bigger is better for conducting efficiency. The gain in efficiency with size is maximized by the control of conduit shape, which balances end-wall and lumen resistances. | Ecological wood anatomy; vascular structure and function; water transport | 2006 |
| 539 |
 |
Davidson, Diane W. | Size variability in the worker caste of a social insect (veromessor pergandei mayr) as a function of the competitive environment | Worker size polymorphism in colonies of Veromessor pergandei, a granivorous desert ant, is inversely related to the intensity of interspecific competition in the habitat for seven ant communities in the deserts of southern California and southern Arizona. Seed size preferences are positively corr... | Ants; Arizona; California; Coexistence; Communities; Density specialization; Desert granivores; Foraging strategies; Resource partitioning; Size | 1978 |
| 540 |
 |
Gesteland, Raymond F.; Atkins, John F.; Weiss, Robert B. | Slippery runs, shifty stops, backward steps and forward hops: -2, -1, +1, +2, +5 and +6 Ribosomal frameshifting | Frameshift mutations frequently express residual levels of gene activity; that is, they are often leaky. This leakiness can be used as a tool to define the functional components that affect the reading frame during gene expression. Recent technological advances in the capability to efficiently bu... | Molecular Sequence Data; Mutation; RNA, Transfer; Frameshifting | 1987 |
| 541 |
 |
Rogers, Alan R. | Sociobiology of sex and sexes (comment) | A comment on "Sociobiology of sex and sexes" by Marion Blute. | Sociobiology; Sex and sexes | 1984-04 |
| 542 |
 |
Bohs, Lynn A. | Solanaceae: the potato family | Shrubs, herbs, woody vines, occasionally trees, glabrous or pubescent with simple, glandular, branched, or star-shaped hairs, sometimes with prickles. Lvs alternate or paired but not truly opposite, simple or lobed to pinnately compound; stipules absent. Infl composed of variously modified terminal... | Browallia; Brugmansia; Brunfelsia; Capsicum; Cestrum; Petunia; Physalis; Solandra; Solanum; Streptosolen | 2005 |
| 543 |
 |
Bohs, Lynn A. | Solanum allophyllum (Miers) Standl. and the generic delimitation of Cyphomandra and Solanum (Solanaceae) | Solanum allophyllum has previously been placed in Cyphomandra and in Solarium. This species has a number of morphological features not found in Cyphomandra, but has been included in the genus because it has a similar growth habit, three-leaved sympodial units with inflorescences in branch forks, and... | Solanum allophyllum; Cyphomandra | 1989 |
| 544 |
 |
Bohs, Lynn A. | Solanum maternum (Solanaceae), a new Bolivian relative of the tree tomato | A new species endemic to Bolivia, Solanum maternum, is described. Solanum maternum belongs to a group of taxa formerly recognized as the genus Cyphomandra. Solanum maternum is morphologically very similar to the tree tomato, Solanum betaceum, and may be its closest wild relative. | Solanum maternum; Cyphomandra | 1997 |
| 545 |
 |
Bohs, Lynn A. | Solanum phylogeny inferred from chloroplast DNA sequence data | A data set derived from gene sequences of ndhF is used to deduce phylogenetic relationships among the subgenera of Solanum, among related genera of the tribe Solaneae, and within selected Solanum clades. Complete ndhF sequences were obtained for 12 species o f Solanum, representing five of the seve... | Solanum; Capsicum; Cyphomandra; Lycopersicon; Datura; Jaltomata; Nicotiana; Physalis; ndhF; Chloroplast DNA | 1999 |
| 546 |
 |
Seger, Jon | Solitary wasps: behavior and natural history by Kevin M. O'Neill | Most species of living things are insects, and ter- restrial ecology consists largely of interactions between insects and plants. The biologies of major insect groups such as Hymenoptera should be well documented and well known. Amazingly, they are not. The world is awash in excellent reviews of cur... | Insects; Ecological | 2002 |
| 547 |
 |
Olivera, Baldomero M.; McIntosh, J. Michael | Solution structure of αA-conotoxin EIVA, a potent neuromuscular nicotinic acetylcholine receptor antagonist from Conus ermineus | We report the solution three-dimensional structure of an αA-conotoxin EIVA determined by nuclear magnetic resonance spectroscopy and restrained molecular dynamics. The αA-conotoxin EIVA consists of 30 amino acids representing the largest peptide among the α/αAfamily conotoxins discovered so f... | Conotoxins; A-conotoxin EIVA; Conus ermineus | 2003 |
| 548 |
 |
Davidson, Diane W. | Some consequences of diffuse competition in a desert ant community | Exploitative and interference competition are investigated in detail in a community of six coexisting species of granivorous desert ants . A linear model that includes both direct and indirect competitive interactions is used to predict positive or negative correlations in the abundances of com... | Ants; Arizona; California; Coexistence; Communities; Density specialization; Desert granivores; Resource partitioning | 1980 |
| 549 |
 |
Goller, Franz | Song development in birds tutored with phrase pairs | A study of the developmental trajectory of bird song can offer insight into the process of vocal learning. In a previous experiment we tutored white-crowned sparrows with isolated phrase pairs taken from adult conspecific songs consisting of 5 phrases. | Crystallization; Phrase coupling; Syntax diversity | 2004 |
| 550 |
 |
Ehleringer, James R. | Sourcing drugs with stable isotopes | Carbon (δ13C) and nitrogen (δ15N) isotope ratios at natural abundance levels are useful tools in determining the region-of-origin for both cocaine and heroin. Here we show that cocaine originating from different geographic regions of South America exhibited pronounced differences in their δ13C a... | Stable isotopes; Drug sourcing; Region-of-origin signature; Isotope ratio analysis | 2001 |
